Other

China Petroleum Chemical Corporation

Beijing Research Institute of Chemical Industry

Kejing Gao

Jingyan An

Qinfang Zhao

Wei Chen

Jun Zhang

Hua Yang

Dongbing Liu

Ruiguo Tang

Hekuan Luo

Guirong Fan

Ying Guan

Jinsheng Huo

A catalyst component for ethylene polymerization, including an inorganic oxide support, and at least one alkyl metal compound, at least one halide, at least one dihydrocarbyl magnesium compound, at least one difunctional compound that reacts with the dihydrocarbyl magnesium compound and at least one titanium compound, wherein the difunctional compound is a mono-, di- or multi-halogenated alcohol or phenol having from 2 to 20 carbon atoms; or a mono-, di- or multi-halogenated acyl halide having from 2 to 20 carbon atoms. Also, a process for preparing the catalyst component and use thereof.

Catalyst component for ethylene polymerization, a process for preparing thereof and catalyst comprising the same

The present invention relates to a silica gel-supported catalyst component suitable for ethylene (co)polymerization, a catalyst therefrom and use of the same. The catalyst component according to the present invention is obtained by supporting the reaction product of a titanium compound, a halide promoter, a magnesium compound and an electron donor on silica gel having a larger specific surface area. When the resultant catalyst is used for ethylene polymerization, especially gas phase fluidized bed polymerization, not only the activity is substantially enhanced, but also the hydrogen response and the copolymerizability of ethylene with other alpha-olefins are improved. The catalyst is especially suitable for the fluidized bed polymerization operated in a condensed state, with high quality LLDPE resins being obtained.

Silica gel-supported catalyst component for ethylene (co)polymerization, catalyst therefrom and use of the same

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Beijing, China

Kejing Gao